Pathfinder 是由美国Thunderhead engineering公司开发的一个基于人员进出和运动的模拟器。它提供了图形用户界面的模拟设计和执行，以及三维可视化工具的分析结果。该运动的环境是一个完整的三维三角网格设计，以配合实际层面的建设模式。可以计算每个乘员独立运动并给予了一套独特的参数（最高速度，出口的选择，等等)。 Pathfinder可以导入FDS模型，FDS在模拟火灾的同时，可以在相同时间内模拟人员疏散。同步跟踪不仅可以科学地分析出人员疏散的相关数据。这样既直观，又有可靠的数据，还可以分析出人员疏散的最佳时间，减少人员伤亡。
Pathfinder的人员运动模式包括SFPE模式和steering模式。SFPE行为是最基本的行为，以流量为基础的选择意味着人员会自动转移到最近的出口。人员不会相互影响，但是列队将符合SFPE假设。这种模式是基于SFPE消防手册保护工程和SFPE工程指南:人类行为
，利用空间密度，以确定运动速度。steering模式使用路径规划，指导机制，碰撞处理相结合控制人员运动。如果人员之间的距离和最近点的路径超过某一阀值，可以再生新的路径，以适应新的形势。
Thunderhead Engineering Pathfinder 2014.3.1208 (x86/x64) | 182/180 Mb
Pathfinder is a new evacuation simulator. Unlike flow-based or cell-based models, Pathfinder uses techniques from current computer science research to model the movement of individuals, building on technology used in the gaming and computer graphics industries. Pathfinder provides the tools necessary to make confident decisions regarding building layout and fire protection system design.
Multiple simulation modes and customizable occupant properties let you easily explore different scenarios, allowing calculation of conservative and optimistic bounds on expected evacuation times. Pathfinder is an agent-based simulator — each occupant uses a set of individual parameters and makes decisions independently throughout the course of the simulation. In addition to an advanced pedestrian movement simulator, Pathfinder includes an integrated user interface and 3D results visualization. Pathfinder allows you to evaluate evacuation models more quickly and produce more realistic graphics than with other simulators.
Key Features
• Take advantage of modern agent-based simulation techniques performed in a precise, continuous 3D environment.
• Automatically import geometry from a 2D and 3D DXF files, FDS, and PyroSim.
• Use multiple simulator modes, including a new steering mode and a mode based on calculations from the SFPE Handbook.
• Fine tune occupant characteristics and customize the appearance of occupant groups.
• Quickly create simulation models with Pathfinder’s built-in drawing features.
• Impress clients with Pathfinder’s high-quality 3D results.
• View detailed charts of room occupancy and door usage.
Home Page – http://www.thunderheadeng.com/pathfinder/
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